In 1914 the 24HP was updated, giving the 20-30HP, of which it was nothing more than an evolution, representing the E-Series. The engine was always the 4084cc in-line 4 with some mechanical modifications. Between 1914 and 1915 285 looms were assembled; in 1920, after the end of the war, Nicola Romeo took control of the company and completed another 95 chassis that had been left unfinished.